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<head><meta charset="utf-8"><title>weekly meeting August 21 · t-compiler/wg-nll · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/index.html">t-compiler/wg-nll</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html">weekly meeting August 21</a></h3>

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<a name="132536888"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132536888" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132536888">(Aug 21 2018 at 19:30)</a>:</h4>
<p>Hey <span class="user-mention" data-user-id="116009">@nikomatsakis</span> are you able to run the meeting tonight?</p>



<a name="132536894"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132536894" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132536894">(Aug 21 2018 at 19:30)</a>:</h4>
<p>yes</p>



<a name="132536905"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132536905" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132536905">(Aug 21 2018 at 19:30)</a>:</h4>
<p>just finishing up a call, be there soon</p>



<a name="132536928"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132536928" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132536928">(Aug 21 2018 at 19:31)</a>:</h4>
<p>hey everyone :)</p>



<a name="132536942"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132536942" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132536942">(Aug 21 2018 at 19:31)</a>:</h4>
<p>o/</p>



<a name="132536998"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132536998" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132536998">(Aug 21 2018 at 19:32)</a>:</h4>
<p>o/ hey everyone :D (I'm back from vacation :)</p>



<a name="132537159"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537159" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537159">(Aug 21 2018 at 19:34)</a>:</h4>
<p>ok, I'm here</p>



<a name="132537222"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537222" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537222">(Aug 21 2018 at 19:35)</a>:</h4>
<p>how good was rustconf ? :D (from twitter it looked awesome)</p>



<a name="132537270"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537270" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537270">(Aug 21 2018 at 19:36)</a>:</h4>
<p>was pretty nice from my point of view :)</p>



<a name="132537272"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537272" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537272">(Aug 21 2018 at 19:36)</a>:</h4>
<p>Rustconf was great :)</p>



<a name="132537279"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537279" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537279">(Aug 21 2018 at 19:36)</a>:</h4>
<p>felt like a big shift from last year to me</p>



<a name="132537290"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537290" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537290">(Aug 21 2018 at 19:36)</a>:</h4>
<p>one of the best things is that there were 3 times more sponsors</p>



<a name="132537292"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537292" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537292">(Aug 21 2018 at 19:36)</a>:</h4>
<p>big names</p>



<a name="132537295"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537295" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537295">(Aug 21 2018 at 19:36)</a>:</h4>
<p>a lot of new people</p>



<a name="132537323"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537323" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537323">(Aug 21 2018 at 19:37)</a>:</h4>
<p>yeah, a large, clear step away from "hobbyist lang" to "work lang", which is exciting</p>



<a name="132537328"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537328" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537328">(Aug 21 2018 at 19:37)</a>:</h4>
<p>a lot of Googlers talking about Fuchsia</p>



<a name="132537331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537331">(Aug 21 2018 at 19:37)</a>:</h4>
<p><a href="https://paper.dropbox.com/doc/Non-lexical-lifetimes-NLL-Triage--AH37Dr48p1wLrhGLhr77RpK5Ag-Em2cJrvxQMMFWLE7lE5Be" target="_blank" title="https://paper.dropbox.com/doc/Non-lexical-lifetimes-NLL-Triage--AH37Dr48p1wLrhGLhr77RpK5Ag-Em2cJrvxQMMFWLE7lE5Be">NLL triage doc link, btw</a></p>



<a name="132537334"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537334" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537334">(Aug 21 2018 at 19:37)</a>:</h4>
<p>yes</p>



<a name="132537335"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537335" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537335">(Aug 21 2018 at 19:37)</a>:</h4>
<p>awesome</p>



<a name="132537343"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537343" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537343">(Aug 21 2018 at 19:37)</a>:</h4>
<p>even Disney is powering Obama and Trump bots with Rust lang :)</p>



<a name="132537420"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537420" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537420">(Aug 21 2018 at 19:38)</a>:</h4>
<p>:)</p>



<a name="132537423"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537423" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537423">(Aug 21 2018 at 19:38)</a>:</h4>
<p>so, on the topic of NLL...</p>



<a name="132537429"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537429" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537429">(Aug 21 2018 at 19:38)</a>:</h4>
<p>I did not get as far through triage as I wanted to by the time of this meeting <em>but</em></p>



<a name="132537430"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537430" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537430">(Aug 21 2018 at 19:38)</a>:</h4>
<p>oh lets not forget to actually ping, right?</p>



<a name="132537441"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537441" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537441">(Aug 21 2018 at 19:39)</a>:</h4>
<p><span class="user-group-mention" data-user-group-id="491">@WG-compiler-nll</span> weekly mtg</p>



<a name="132537466"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537466" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537466">(Aug 21 2018 at 19:39)</a>:</h4>
<p>I wanted to talk a bit meta about how to prioritize and our sense of where things are</p>



<a name="132537467"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537467" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537467">(Aug 21 2018 at 19:39)</a>:</h4>
<p><span class="emoji emoji-1f44b" title="wave">:wave:</span></p>



<a name="132537480"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537480" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537480">(Aug 21 2018 at 19:40)</a>:</h4>
<blockquote>
<p>even Disney is powering Obama and Trump bots with Rust lang :)</p>
</blockquote>
<p>/me assumes this means the "Hall of Presidents", and not twitter bots</p>



<a name="132537481"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537481" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537481">(Aug 21 2018 at 19:40)</a>:</h4>
<p>seems like:</p>
<ul>
<li>Performance is looking better than ever. We need to seriously start thinking about the "how much is enough" question</li>
</ul>



<a name="132537544"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537544" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537544">(Aug 21 2018 at 19:40)</a>:</h4>
<ul>
<li>Correctness: we've got a few "must fix" problems. Crater run though looked pretty stable, so that's good.</li>
</ul>



<a name="132537545"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537545" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537545">(Aug 21 2018 at 19:41)</a>:</h4>
<blockquote>
<blockquote>
<p>even Disney is powering Obama and Trump bots with Rust lang :)</p>
</blockquote>
<p>/me assumes this means the "Hall of Presidents", and not twitter bots</p>
</blockquote>
<p>they are doing even more things, last message from RustConf, sorry for interrupting again, it was so exciting to hear all this :P</p>



<a name="132537563"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537563" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537563">(Aug 21 2018 at 19:41)</a>:</h4>
<ul>
<li>Diagnostics: I think we're doing pretty well, but I haven't really tried to assess this...</li>
</ul>



<a name="132537571"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537571" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537571">(Aug 21 2018 at 19:41)</a>:</h4>
<p>maybe <span class="user-mention" data-user-id="116107">@davidtwco</span> or <span class="user-mention" data-user-id="116118">@Matthew Jasper</span>, if they are around, can summarize?</p>



<a name="132537619"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537619" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537619">(Aug 21 2018 at 19:42)</a>:</h4>
<blockquote>
<ul>
<li>Diagnostics: I think we're doing pretty well, but I haven't really tried to assess this...</li>
</ul>
</blockquote>
<p>we'll probably need a third round of .nll.stderr comparisons now that compile-fail has been migrated to ui/</p>



<a name="132537625"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537625" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537625">(Aug 21 2018 at 19:42)</a>:</h4>
<p>what is the status from the last one?</p>



<a name="132537627"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537627" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537627">(Aug 21 2018 at 19:42)</a>:</h4>
<p>(And also, we still need to make a <code>compare-mode=nll</code> that applies to run-pass/, right?)</p>



<a name="132537630"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537630" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537630">(Aug 21 2018 at 19:42)</a>:</h4>
<p>hmm yes</p>



<a name="132537632"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537632" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537632">(Aug 21 2018 at 19:42)</a>:</h4>
<p>I wonder if we can just turn on compare-mode=migrate for run-pass</p>



<a name="132537638"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537638" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537638">(Aug 21 2018 at 19:42)</a>:</h4>
<p>well I guess we still want to test the old mode</p>



<a name="132537642"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537642" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537642">(Aug 21 2018 at 19:43)</a>:</h4>
<blockquote>
<p>what is the status from the last one?</p>
</blockquote>
<p>i think its this: <a href="https://github.com/rust-lang/rust/issues/52663#issuecomment-410382451" target="_blank" title="https://github.com/rust-lang/rust/issues/52663#issuecomment-410382451">https://github.com/rust-lang/rust/issues/52663#issuecomment-410382451</a></p>



<a name="132537662"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537662" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537662">(Aug 21 2018 at 19:43)</a>:</h4>
<p>I've not had a chance to do much this week, so I don't know what improvements have been made recently w/r/t diagnostics.</p>



<a name="132537668"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537668" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Matthew Jasper <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537668">(Aug 21 2018 at 19:43)</a>:</h4>
<p>Overall we're probably slightly better than AST. It's mostly a matter of tweaking diagnostics.</p>



<a name="132537726"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537726" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537726">(Aug 21 2018 at 19:44)</a>:</h4>
<p>it's a bit hard to tell how to best organize these sorts of things</p>



<a name="132537727"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537727" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Matthew Jasper <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537727">(Aug 21 2018 at 19:44)</a>:</h4>
<p>The one big thing to do is improve "this borrow must outlive FREE REGION" note.</p>



<a name="132537733"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537733" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537733">(Aug 21 2018 at 19:44)</a>:</h4>
<p>yeah, I think I filed an issue on that specifically</p>



<a name="132537748"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537748" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Matthew Jasper <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537748">(Aug 21 2018 at 19:45)</a>:</h4>
<p>Move errors could also do with a little bit of love to bring them up to the quality of "cannot mutate" errors</p>



<a name="132537828"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537828" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537828">(Aug 21 2018 at 19:46)</a>:</h4>
<p>ok so</p>



<a name="132537836"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537836" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537836">(Aug 21 2018 at 19:46)</a>:</h4>
<p>do we think the best way to proceed is to do the detailed comparison</p>



<a name="132537841"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537841" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537841">(Aug 21 2018 at 19:47)</a>:</h4>
<p>and keep the "meta issue" format that <span class="user-mention" data-user-id="116083">@pnkfelix</span> was using?</p>



<a name="132537845"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537845" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537845">(Aug 21 2018 at 19:47)</a>:</h4>
<p>seems to be working reasonably well?</p>



<a name="132537856"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537856" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537856">(Aug 21 2018 at 19:47)</a>:</h4>
<p>better than paper docs, I think</p>



<a name="132537875"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537875" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537875">(Aug 21 2018 at 19:47)</a>:</h4>
<p>(which is somewhat surprising. But I guess paper docs are harder to link / integrate with the repo)</p>



<a name="132537906"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537906" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537906">(Aug 21 2018 at 19:48)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AWG-compiler-nll+milestone%3A%22Rust+2018+RC%22" target="_blank" title="https://github.com/rust-lang/rust/issues?q=is%3Aopen+is%3Aissue+label%3AWG-compiler-nll+milestone%3A%22Rust+2018+RC%22">this list of milestone issues is a bit overwhelming</a></p>



<a name="132537929"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537929" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537929">(Aug 21 2018 at 19:48)</a>:</h4>
<p>so I'm partly trying to decide what to do with it</p>



<a name="132537931"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537931" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537931">(Aug 21 2018 at 19:48)</a>:</h4>
<p>I think top priority is presumably going to be the NLL-complete sort of things</p>



<a name="132537948"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132537948" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132537948">(Aug 21 2018 at 19:49)</a>:</h4>
<p>I think we should finish up our current round of perf tweaks, probably?</p>



<a name="132538011"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538011" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538011">(Aug 21 2018 at 19:50)</a>:</h4>
<p>(I remember a couple issues for work that's been done, I've commented on them but did not close them just in case)</p>



<a name="132538035"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538035" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538035">(Aug 21 2018 at 19:50)</a>:</h4>
<p>ok I closed some</p>



<a name="132538037"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538037" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538037">(Aug 21 2018 at 19:50)</a>:</h4>
<p>those perf tweaks look super good</p>



<a name="132538038"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538038" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538038">(Aug 21 2018 at 19:50)</a>:</h4>
<p>I guess what I can do...</p>



<a name="132538057"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538057" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538057">(Aug 21 2018 at 19:51)</a>:</h4>
<p>...try to summarize current status of perf tweaks into a list</p>



<a name="132538060"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538060" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538060">(Aug 21 2018 at 19:51)</a>:</h4>
<p>and pull out the NLL-complete items</p>



<a name="132538063"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538063" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538063">(Aug 21 2018 at 19:51)</a>:</h4>
<p>try to go through and figure out the "general problem" in each case</p>



<a name="132538256"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538256" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538256">(Aug 21 2018 at 19:55)</a>:</h4>
<p>I guess there's nothing after RC ?</p>



<a name="132538273"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538273" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538273">(Aug 21 2018 at 19:55)</a>:</h4>
<p>that is, is it our last milestone and we should finish all these ? :)</p>



<a name="132538276"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538276" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538276">(Aug 21 2018 at 19:55)</a>:</h4>
<p>i thought there was</p>



<a name="132538278"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538278" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538278">(Aug 21 2018 at 19:55)</a>:</h4>
<p>(stuff after RC)</p>



<a name="132538280"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538280" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538280">(Aug 21 2018 at 19:56)</a>:</h4>
<p>/me looks</p>



<a name="132538319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538319">(Aug 21 2018 at 19:56)</a>:</h4>
<p>there is stuff after RC</p>



<a name="132538327"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538327" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538327">(Aug 21 2018 at 19:56)</a>:</h4>
<p>in particular there is a RC 2</p>



<a name="132538328"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538328" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538328">(Aug 21 2018 at 19:56)</a>:</h4>
<p>and then final Rust 2018 release</p>



<a name="132538331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538331">(Aug 21 2018 at 19:56)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/milestones/" target="_blank" title="https://github.com/rust-lang/rust/milestones/">https://github.com/rust-lang/rust/milestones/</a></p>



<a name="132538335"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538335" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538335">(Aug 21 2018 at 19:56)</a>:</h4>
<p>yay :p</p>



<a name="132538336"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538336" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538336">(Aug 21 2018 at 19:56)</a>:</h4>
<p>I'm looking over the list of issues a bit now</p>



<a name="132538337"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538337" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538337">(Aug 21 2018 at 19:56)</a>:</h4>
<p>interesting we don't have anything for NLL tagged with RC 2</p>



<a name="132538339"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538339" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538339">(Aug 21 2018 at 19:56)</a>:</h4>
<p>probably need to retriage?</p>



<a name="132538353"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538353" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538353">(Aug 21 2018 at 19:57)</a>:</h4>
<p>seems like <span class="user-mention" data-user-id="116113">@lqd</span> we can mark <a href="https://github.com/rust-lang/rust/issues/53171" target="_blank" title="https://github.com/rust-lang/rust/issues/53171">https://github.com/rust-lang/rust/issues/53171</a> as closed</p>



<a name="132538359"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538359" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538359">(Aug 21 2018 at 19:57)</a>:</h4>
<blockquote>
<p>interesting we don't have anything for NLL tagged with RC 2</p>
</blockquote>
<p>I think I didn't put anythign there because</p>



<a name="132538360"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538360" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538360">(Aug 21 2018 at 19:57)</a>:</h4>
<p><span class="emoji emoji-1f44d" title="thumbs up">:thumbs_up:</span></p>



<a name="132538362"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538362" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538362">(Aug 21 2018 at 19:57)</a>:</h4>
<p>when triaging it was usually like "either this is far future" (in which case I did Release)</p>



<a name="132538366"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538366" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538366">(Aug 21 2018 at 19:57)</a>:</h4>
<p>or it is "now" (EP2) or "next" (RC)</p>



<a name="132538374"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538374" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538374">(Aug 21 2018 at 19:57)</a>:</h4>
<p>or "this is a fire we have to put out ASAP", yeah I follow</p>



<a name="132538376"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538376" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538376">(Aug 21 2018 at 19:57)</a>:</h4>
<p>I guess we'll start populating it a bit now, we should probably look over the Rust 2018 Release too</p>



<a name="132538420"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538420" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538420">(Aug 21 2018 at 19:58)</a>:</h4>
<p>still, some of the "far future" things could probably percolate backward</p>



<a name="132538441"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538441" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538441">(Aug 21 2018 at 19:59)</a>:</h4>
<p>there's a least 4-5 being worked on or with opened PRs</p>



<a name="132538458"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538458" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538458">(Aug 21 2018 at 19:59)</a>:</h4>
<p>maybe Wesley's PR dropping html5ever's memory usage by 50% could be enough to close the "memory intensive" issue as well</p>



<a name="132538464"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538464" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538464">(Aug 21 2018 at 19:59)</a>:</h4>
<p>which PR is that?</p>



<a name="132538471"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538471" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538471">(Aug 21 2018 at 20:00)</a>:</h4>
<p>oh, I think I know the one, the <code>'static</code> one?</p>



<a name="132538526"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538526" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538526">(Aug 21 2018 at 20:00)</a>:</h4>
<p>SCC + 'static</p>



<a name="132538531"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538531" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538531">(Aug 21 2018 at 20:00)</a>:</h4>
<p>that's nice, I didn't predict that outcome, but it makes sense</p>



<a name="132538535"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538535" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538535">(Aug 21 2018 at 20:00)</a>:</h4>
<p>I agree that would be enough</p>



<a name="132538541"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538541" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538541">(Aug 21 2018 at 20:00)</a>:</h4>
<p>too bad that html5ever is not currently showing up in perf</p>



<a name="132538545"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538545" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538545">(Aug 21 2018 at 20:00)</a>:</h4>
<p>IIRC cargo uses 1G for example</p>



<a name="132538550"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538550" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538550">(Aug 21 2018 at 20:00)</a>:</h4>
<p>yeah</p>



<a name="132538560"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538560" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538560">(Aug 21 2018 at 20:00)</a>:</h4>
<p>it's true that AST borrowck uses less than MIR on html5ever but still :)</p>



<a name="132538565"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538565" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538565">(Aug 21 2018 at 20:00)</a>:</h4>
<p>it doesn't have to be perfect</p>



<a name="132538583"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538583" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538583">(Aug 21 2018 at 20:01)</a>:</h4>
<p>and we can still improve it afterwards, it's not like we <em>have</em> to use more memory in the future</p>



<a name="132538593"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538593" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538593">(Aug 21 2018 at 20:01)</a>:</h4>
<p>I think re: perf that I would like to see vast majority under 10% and <em>everything</em> under 20%. I wonder if that is achievable :)</p>



<a name="132538594"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538594" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538594">(Aug 21 2018 at 20:01)</a>:</h4>
<p>feels within reach</p>



<a name="132538600"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538600" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538600">(Aug 21 2018 at 20:01)</a>:</h4>
<p>tbh at this point I'm optimizing as much for "PR" as anything</p>



<a name="132538603"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538603" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Matthew Jasper <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538603">(Aug 21 2018 at 20:01)</a>:</h4>
<p>It's a lot closer than it was a month ago</p>



<a name="132538604"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538604" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538604">(Aug 21 2018 at 20:02)</a>:</h4>
<p>that is, I don't want it to become a meme that rustc got even slower or something</p>



<a name="132538652"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538652" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538652">(Aug 21 2018 at 20:02)</a>:</h4>
<p>would be cool to have transient/lightweight benches for up-to-date crates</p>



<a name="132538653"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538653" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538653">(Aug 21 2018 at 20:02)</a>:</h4>
<p>of course best way to achieve that is for it not to be true :P</p>



<a name="132538659"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538659" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538659">(Aug 21 2018 at 20:02)</a>:</h4>
<p>yes, it seems like we should remeasure the master crates</p>



<a name="132538660"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538660" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538660">(Aug 21 2018 at 20:02)</a>:</h4>
<p>as the modern versions have better perf ofc</p>



<a name="132538676"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538676" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538676">(Aug 21 2018 at 20:02)</a>:</h4>
<p>it'd also be nice to draw up a graph showing the improvements over time</p>



<a name="132538685"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538685" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538685">(Aug 21 2018 at 20:02)</a>:</h4>
<p>the existing summayr graphs are confusing</p>



<a name="132538691"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538691" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538691">(Aug 21 2018 at 20:02)</a>:</h4>
<p>because new tests are added etc</p>



<a name="132538695"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538695" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538695">(Aug 21 2018 at 20:03)</a>:</h4>
<p>but anyway</p>



<a name="132538708"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538708" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538708">(Aug 21 2018 at 20:03)</a>:</h4>
<p>ok, I think I'll spend rest of my time today going over the NLL-complete stuff and trying to categorize those a bit</p>



<a name="132538722"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538722" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538722">(Aug 21 2018 at 20:03)</a>:</h4>
<p>(yep, having the graphs from "dashboard" but for modern crates would be cool, I'll try and prepare a PR for simulacrum to at least add the modern versions, on the side, so they can integrate it in a nightly run or something)</p>



<a name="132538778"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538778" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538778">(Aug 21 2018 at 20:04)</a>:</h4>
<p>it'd be good in general to be measuring those</p>



<a name="132538786"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538786" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538786">(Aug 21 2018 at 20:04)</a>:</h4>
<p>particularly since all of these crates seem like pretty imp't crates to be keeping an eye on</p>



<a name="132538815"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538815" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538815">(Aug 21 2018 at 20:05)</a>:</h4>
<p>I guess most people have work in progress already, so is there something I can do in particular ?</p>



<a name="132538818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538818">(Aug 21 2018 at 20:05)</a>:</h4>
<p>do we know where clap is spending its time in?</p>



<a name="132538840"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538840" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538840">(Aug 21 2018 at 20:05)</a>:</h4>
<p>since its now the top of the list, but is one of the most widely used</p>



<a name="132538884"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538884" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538884">(Aug 21 2018 at 20:06)</a>:</h4>
<p>it's an old version actually</p>



<a name="132538903"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538903" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538903">(Aug 21 2018 at 20:06)</a>:</h4>
<p>I don't think we've profiled it again since all the recent perf work ?</p>



<a name="132538904"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538904" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538904">(Aug 21 2018 at 20:06)</a>:</h4>
<p>ohhh right</p>



<a name="132538989"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538989" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538989">(Aug 21 2018 at 20:08)</a>:</h4>
<p>I was planning on doing some measurements</p>



<a name="132538990"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132538990" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132538990">(Aug 21 2018 at 20:08)</a>:</h4>
<p>I haven't gotten to it yet though</p>



<a name="132539006"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539006" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539006">(Aug 21 2018 at 20:08)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/pull/53314" target="_blank" title="https://github.com/rust-lang/rust/pull/53314">https://github.com/rust-lang/rust/pull/53314</a> seemed like it helped</p>



<a name="132539008"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539008" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539008">(Aug 21 2018 at 20:08)</a>:</h4>
<p>but <a href="https://perf.rust-lang.org/compare.html?start=d5a448b3f47b22c9cb010198bdcc49d4392b090b&amp;end=0d2e1bf3da15c0fe979778c5946483986a22e9a7" target="_blank" title="https://perf.rust-lang.org/compare.html?start=d5a448b3f47b22c9cb010198bdcc49d4392b090b&amp;end=0d2e1bf3da15c0fe979778c5946483986a22e9a7">that measurement</a> is old</p>



<a name="132539011"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539011" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539011">(Aug 21 2018 at 20:08)</a>:</h4>
<p>maybe we should re-run</p>



<a name="132539025"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539025" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539025">(Aug 21 2018 at 20:09)</a>:</h4>
<p>(you can see a <a href="https://perf.rust-lang.org/compare.html?start=d5a448b3f47b22c9cb010198bdcc49d4392b090b&amp;end=0d2e1bf3da15c0fe979778c5946483986a22e9a7" target="_blank" title="https://perf.rust-lang.org/compare.html?start=d5a448b3f47b22c9cb010198bdcc49d4392b090b&amp;end=0d2e1bf3da15c0fe979778c5946483986a22e9a7">6.5% improvement here</a>)</p>



<a name="132539101"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539101" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539101">(Aug 21 2018 at 20:10)</a>:</h4>
<p>I've not got anything in progress at the moment, is there anything you'd like me to be looking at?</p>



<a name="132539140"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539140" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539140">(Aug 21 2018 at 20:10)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> I expect one of the NLL-complete issues (or an ICE) would be best</p>



<a name="132539261"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539261" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539261">(Aug 21 2018 at 20:14)</a>:</h4>
<p>i’ll set-up some local perf runs when i’m back in town. interested in comparing some of the recent crate versions</p>



<a name="132539766"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539766" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539766">(Aug 21 2018 at 20:23)</a>:</h4>
<p><span class="user-mention" data-user-id="125246">@memoryruins</span> (btw we've done this <a href="https://hackmd.io/3r1ZnkUyRD2NMU-dnm_RPg?view#Timings-using-the-master-version-of-each-crate" target="_blank" title="https://hackmd.io/3r1ZnkUyRD2NMU-dnm_RPg?view#Timings-using-the-master-version-of-each-crate">timing</a> of the modern versions a couple weeks ago)</p>



<a name="132539977"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539977" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539977">(Aug 21 2018 at 20:26)</a>:</h4>
<p>(and if we're at the end of the meeting, I want to say the recent work you've all done was exceptional :) so many awesome improvements)</p>



<a name="132539979"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539979" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539979">(Aug 21 2018 at 20:26)</a>:</h4>
<p><a href="/user_uploads/4715/gp-0vfHuVmW5EfaJWLxZTH9u/IMG_0763.PNG" target="_blank" title="IMG_0763.PNG">IMG_0763.PNG</a></p>
<div class="message_inline_image"><a href="/user_uploads/4715/gp-0vfHuVmW5EfaJWLxZTH9u/IMG_0763.PNG" target="_blank" title="IMG_0763.PNG"><img src="/user_uploads/4715/gp-0vfHuVmW5EfaJWLxZTH9u/IMG_0763.PNG"></a></div>



<a name="132539985"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132539985" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> memoryruins <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132539985">(Aug 21 2018 at 20:26)</a>:</h4>
<p>times have changed so fast</p>



<a name="132540012"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132540012" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132540012">(Aug 21 2018 at 20:27)</a>:</h4>
<p>lol</p>



<a name="132540024"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132540024" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132540024">(Aug 21 2018 at 20:27)</a>:</h4>
<p>good times</p>



<a name="132540087"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/122657-t-compiler/wg-nll/topic/weekly%20meeting%20August%2021/near/132540087" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/122657-t-compiler/wg-nll/topic/weekly.20meeting.20August.2021.html#132540087">(Aug 21 2018 at 20:28)</a>:</h4>
<p>the good ole days of 6000% :D</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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